000 00263nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aRuhela, S.P
245 0 _aEducational Technology & Management
260 _aMeerut
_bIPH
_c2006
300 _a213p.
942 _cBK
999 _c11895
_d11895